21 
above for all patients at the Government hospital, namely, a higher 
rate of infection among males with whipworms, hookworms, pinworms, 
Cochin-China worms, and dwarf tapeworms, and a higher rate among 
females with eelworms, as follows: 
Examined. 
Infections. 
Per 100 
persons. 
Trichuris trichiura: 
Males 
576 
36 
6.25 
Females 
548 
29 
5.29 
Oxyuris vermicularis: 
Males 
576 
3 
0.52 
Females 
548 
2 
0.36 
Hookworms: 
Males 
576 
5 
0.87 
Females 
548 
« 
0.00 
Ascaris lumbricoides: 
Males 
576 
1 
0.17 
Females 
548 
2 
0.37 
StrongyJoides stercoralis: 
Males 
576 
2 
0.35 
Females 
548 
1 
0.18 
Hymenolepis nana: 
Males 
576 
3 
0.52 
Females 
548 
0 
0.00 
Tsenia saginata: 
Males 
576 
0 
0.00 
Females 
548 
0 
0.00 
The greater frequency of intestinal worms among males than among 
females at the Government hospital, whether we consider the total 
number of patients in the institution or only those admitted from the 
District of Columbia, is evidently due, therefore, to a greater male 
infection with whipworms and hookworms, which is explainable by 
the excessive number of infections with these worms introduced 
among the males by the patients admitted from military and tropical 
life, and also to a greater male infection with pinworms, Cochin-China 
worms, and dwarf tapeworms, which is not so explainable. 
These last three worms, however, were found to be more prevalent 
among males than among females at the other two institutions also, 
the dwarf tapeworm having been more frequent among males than 
among females at the orphanage, Cochin-China worms more frequent 
among males than among females at the Connecticut hospital, and 
pinworms more frequent among males than among females at both 
the orphanage and the Connecticut hospital. 
On the whole, therefore, it would appear from our results that pin- 
worms, Cochin-China worms, and dwarf tapeworms are more frequent 
parasites among males than among females. Eelworms and whip- 
worms seem to be more common among females than among males, 
